Lab Overview An Atmega 328p is programmed with an Arduino Bootloader and paired with an RFM95W to form an RCIED. The 328p is both armed and fired from codes sent by a separate transmitter. Tools / Parts / Test Equipment Soldering Iron Helping Hands Solder Multimeter

Lab Overview This circuit is a copy of the original RFT-2 but has been streamlined for milling. It uses a Quad NOR gate to arm the circuit in conjunction with an RC TIMER. After the arming timer completes, the CWC7 radio module becomes activated. The bomber can select the preferred decoded modulation. When the CWC7 […]

Lab Overview This circuit uses the output from a modified handheld radio to trigger an SCR (SCR1) to fire a single detonator. Tools / Parts / Test Equipment Soldering Iron Helping Hands Solder Multimeter

Lab Overview This circuit utilizes an RC-Timer and OP- Amp to provide a safe arm timer less than 10 seconds where the device will then wait for a small signal speaker device ( FRS/Cellphone) to fire a Det. Tools / Parts / Test Equipment Soldering Iron Helping Hands Solder Multimeter

Lab Overview This circuit is based on the predecessor to the RFT-2 with some modifications.The firing circuit has been replaced with an SCR and the CWC-7 is replaced with a radio module and a PT-2272 decoder IC. Tools / Parts / Test Equipment Soldering Iron Helping Hands Solder Multimeter

Lab Overview A Decade Counter counts the number of times the receiver squelch breaks. This allows the bomber to fire the device by keying the transmitter several times in a row to make the device less susceptible to predetonation. Tools / Parts / Test Equipment Soldering Iron Helping Hands Solder Multimeter

Lab Overview This circuit historically is attached to a cell phone. The small signal from the speaker of the cell phone engages with an optocoupler to trigger an SCR, which triggers a relay to fire a DET. Tools / Parts / Test Equipment Soldering Iron Helping Hands Solder Multimeter

Lab Overview This is a copy of a predecessor circuit to the RFT-2. This uses the same logic circuit but breaks out the PT2272 decoder instead of using a CWC-7. Tools / Parts / Test Equipment Soldering Iron Helping Hands Solder Multimeter

Lab Overview Initial reporting on the Nokia 3310 Op-Amp was incorrect. Originally it was believed that the circuit contained a 555 Timer vice, the Op-Amp. This circuit explores what it would take to create the initially reported device using a simple 555 timer in an astable configuration. After the 555 timer arms the circuit, a […]