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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
Posted to sci.electronics.design,sci.electronics.repair
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Need schematic
Need the schematic for
4VWIN Wireless Home Security Driveway Alarm https://www.amazon.com/4VWIN-Wireles...e+door+monitor or Harbor Freight Home Security Driveway Alarm https://www.harborfreight.com/wirele...tem-62447.html or ? whatever name it is sold under. I want to modify it for my special application. |
#2
Posted to sci.electronics.design,sci.electronics.repair
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Need schematic
On 9/19/18 9:38 PM, OGER wrote:
Need the schematic for Â* 4VWIN Wireless Home Security Driveway Alarm Â*Â*Â*Â*https://www.amazon.com/4VWIN-Wireles...e+door+monitor or Â* Harbor Freight Home Security Driveway Alarm Â*Â*Â*Â*https://www.harborfreight.com/wirele...tem-62447.html or Â* ?Â* whatever name it is sold under. I want to modify it for my special application. Such as an IED, maybe? Cheers Phil Hobbs |
#3
Posted to sci.electronics.design,sci.electronics.repair
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Need schematic
On 9/19/2018 8:38 PM, OGER wrote:
Need the schematic for Â* 4VWIN Wireless Home Security Driveway Alarm Â*Â*Â*Â*https://www.amazon.com/4VWIN-Wireles...e+door+monitor or Â* Harbor Freight Home Security Driveway Alarm Â*Â*Â*Â*https://www.harborfreight.com/wirele...tem-62447.html or Â* ?Â* whatever name it is sold under. I want to modify it for my special application. I had the original Harbor Freight unit pretty well figured out, and made several modifications. Then they went to surface mount parts and changed the type of circuit, and the parts considerably! I gave up on deciphering the new unit. If you get info, I'm interested. Mikek |
#4
Posted to sci.electronics.design,sci.electronics.repair
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Need schematic
On Thu, 20 Sep 2018 16:20:48 -0400, Phil Hobbs
wrote: Such as an IED, maybe? Cheers Phil Hobbs On my website is the design and firmware for a very small countdown timer that could indeed be misused as a detonator. I designed it as an option board for the Roy induction heater and have now adapted it to time the heat on our Annie, the brass annealer for people who reload ammo. I refuse to be a fear-monger and refuse to punish legitimate users by taking down the design because of a theoretical misuse scenario. Proposing such a scenario as if it's actually probable is beyond the pale. After all, ordinary burglar alarm PIR detector, microswitches, vibration sensor (another burglar alarm device) and any number of devices can be misused. If you were joking, it wasn't funny. Enough fear mongering and you end up with something like the Communist Republic of California where you're not free to do much of anything other than smoke a blunt or be queer. On a lighter note, I'm kicked around this question in my mind for many years. "What would it take to make a totally non-disarmable bomb?" Since I'm now retired, maybe I'll take a go at it. Not with actual explosives, of course. Maybe a big red LED that spells out "Boom". Hmmm, maybe I could get a competition going, similar to battlebots. Hmmmm, John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address |
#5
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Need schematic
On Monday, September 24, 2018 at 4:52:07 PM UTC-4, Neon John wrote:
"What would it take to make a totally non-disarmable bomb?" There are very nearly an infinity of ways, none of which are terribly complex. The issue with bombs is that they are often overly complex - and it is the complexity that becomes their weakness. If you know how to 'stand' an egg, you are already half-way there. Now, if you want a non-disarmable bomb that will also go boom only and exactly when asked (unless a disarm attempt is made), that is a different problem. Peter Wieck Melrose Park, PA |
#6
Posted to sci.electronics.design,sci.electronics.repair
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Need schematic
On Mon, 24 Sep 2018 16:51:58 -0400, Neon John wrote:
On a lighter note, I'm kicked around this question in my mind for many years. "What would it take to make a totally non-disarmable bomb?" Since I'm now retired, maybe I'll take a go at it. Not with actual explosives, of course. Maybe a big red LED that spells out "Boom". Hmmm, maybe I could get a competition going, similar to battlebots. Hmmmm, John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address The threat posed by ever more powerful cheap lasers from China is something the authorities appear to be overlooking. And then there are all those folks designing their own viruses aided by cheap PCR machines, also from China, that need looking into urgently. -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition. |
#7
Posted to sci.electronics.design,sci.electronics.repair
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Need schematic
Cursitor Doom wrote in newsoei61$3kk$2@dont-
email.me: On Mon, 24 Sep 2018 16:51:58 -0400, Neon John wrote: On a lighter note, I'm kicked around this question in my mind for many years. "What would it take to make a totally non-disarmable bomb?" Since I'm now retired, maybe I'll take a go at it. Not with actual explosives, of course. Maybe a big red LED that spells out "Boom". Hmmm, maybe I could get a competition going, similar to battlebots. Hmmmm, John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address The threat posed by ever more powerful cheap lasers from China is something the authorities appear to be overlooking. And then there are all those folks designing their own viruses aided by cheap PCR machines, also from China, that need looking into urgently. Consumers have access to consumer grade goods. AMD makes their new Ryzen CPU for consumers with like 16 cores or such. The stuff the pros and the supercomputer builders use have 32 cores for 64 process threads. I will be building a waveform analyzer using the 2990WX. They are like $1800 each. PCR machines? They don't require much. Remember "Sneakers"? The future is quantum decryption. |
#8
Posted to sci.electronics.design,sci.electronics.repair
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Need schematic
On Mon, 24 Sep 2018 16:51:58 -0400, Neon John wrote:
On Thu, 20 Sep 2018 16:20:48 -0400, Phil Hobbs wrote: Such as an IED, maybe? Cheers Phil Hobbs On my website is the design and firmware for a very small countdown timer that could indeed be misused as a detonator. I designed it as an option board for the Roy induction heater and have now adapted it to time the heat on our Annie, the brass annealer for people who reload ammo. I refuse to be a fear-monger and refuse to punish legitimate users by taking down the design because of a theoretical misuse scenario. Proposing such a scenario as if it's actually probable is beyond the pale. After all, ordinary burglar alarm PIR detector, microswitches, vibration sensor (another burglar alarm device) and any number of devices can be misused. If you were joking, it wasn't funny. Enough fear mongering and you end up with something like the Communist Republic of California where you're not free to do much of anything other than smoke a blunt or be queer. All these goofy laws would be oppressive if many were actually enforced. -- John Larkin Highland Technology, Inc lunatic fringe electronics |
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