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periph-tester v1
by
tve.
2
layer board of
1.50x0.50
inches
(38.10x12.70
mm).
Shared on
December 10th, 2016 17:23.
BLF driver 1400m-17 [rev00e][tried & tested]
by
DEL.
2
layer board of
0.69x0.69
inches
(17.42x17.42
mm).
Shared on
December 10th, 2016 16:18.
BLF flashlight driver, 17 mm, 1.4 A + m
Features
- 7135 1400 mA regulated LED driver
- Dual channel (3+1 7135)
- No OTC - Intended for memory-decay or no-memory firmware.
- R5 to eliminate unintentional Vcc boosting during PWM.
- Cell voltage read upstream of D1.
- Oversized heat plane for the 7135s with good thermal link to the ground ring.
- Generous 0603 pad sizes through-out that will accept 0805 parts as well.
- ‘SS’ SOIC package size for MCU. Tiny85 requires pin-bending to fit.
Revision changes
- New
Suggested parts list
- U1: Atmel Attiny25, SSU or SSN package
- U2-5: 7135 350 mA LED driver
- C1: 10 uF, X5R or better, 0603 or 0805
- D1: Schottky diode, 200 mA 20 V or better, 0805 or SOD323
- R1: 22 kohm, 1%, 0603
- R2: 4.7 kohm, 1%, 0603
- R5: 4.7 ohm, 5%, 0603
F4-AlienFlightNG-Hex-Brushless-V1.zip
by
AlienFlightNG.
4
layer board of
1.10x1.26
inches
(28.02x32.00
mm).
Shared on
December 10th, 2016 10:37.
F4-AlienflightNG-Quad-Brushless-V1.zip
by
AlienFlightNG.
4
layer board of
1.10x1.26
inches
(28.02x32.00
mm).
Shared on
December 10th, 2016 10:37.
Pop Stopper v1.0a
by
SmittyHalibut.
2
layer board of
1.66x1.21
inches
(42.06x30.63
mm).
Shared on
December 10th, 2016 08:00.
Test board for TL7700 based Pop Stopper.
Connect the ¼" to your headphones, and the 1/8" to your amp. The amp will see the two 150ohm resistors on the bottom on the board instead of your headphones for the first two-ish seconds after power on, so the POP of amp startup goes into the resistors, not your headphones. Similarly, on amp shut-down, it disconnects the headphones as quickly as it can before the shut-down pop hits your ‘phones.
Components on the board are labeled by value. None of the components pass audio (only the connectors and relay), so they can be of common low precision, nothing special, junk drawer quality.
The SOIC is a Texas Instruments TL7700 Reset controller: http://www.ti.com/product/TL7700 Note that the outline on the board is too narrow (my bad, sorry). I had to fold the pins under the chip to solder it to the board.
¼" connector is Neutek NRJ6HF, something like: http://www.mouser.com/ProductDetail/REAN/NRJ6HF-AU
Relay is HK19F type, like: http://www.ebay.com/itm/381374965631