OSH Park
Profile for WarHawk-AVG
Shared projects
Micro.Modem.rev_a1
by
WarHawk-AVG.
2
layer board of
1.04x0.95
inches
(26.34x24.13
mm).
Shared on
January 20th, 2016 01:07.
Micro.Modem.rev_a1
2 layer board of 1.04x0.95 inches (26x24mm). $4.90 for three.
Atmega328p-based 1200 Baud AFSK radio modem
For use with MicroAPRS and other amateur radio packet radio protocols
MicroModem MicroModem is an open-source implementation of a 1200-baud AFSK / Bell 202 modem on the popular ATmega328p microprocessor. MicroModem can be used for things like ham radio APRS, AX.25, TCP/IP over SLIP, experimentation with mesh-networks, long-range wireless communication with sensors (Or friends! Or strangers!). It basically comes in two flavors: Prebuilt or DIY.
It is simple enough that, if you have some basic electronics experience, you can understand and build it yourself with a few components and an Arduino. You can also get a more advanced and prebuilt, fully tested MicroModem directly from original designer. He manufacture them personally, to the highest quality. (link/store at his site)
Please note that the resources listed here for building your own MicroModem are for an earlier, more simple version, than the one he currently offers for sale. While the two modems are functionally identical, the version he offers for sale has some technical refinements, and is implemented as an integrated board with MCU, USB and everything on one board, measuring only 3×5 cm. The DIY version is a board with all the external circuitry needed for turning a standard Arduino (or compatible like Microduino) into a MicroModem!
Per original designers request…link to the Rev 1 Documentation for the project
Unit above is the MicroModem, the Microduino-Core/Microduino-Core+ module and the Microduino USB TTL module stacked There is also a combined Microduino Core USB that is an all in one unit
Arduboy.Prototype
by
WarHawk-AVG.
2
layer board of
2.13x3.37
inches
(54.00x85.62
mm).
Shared on
January 14th, 2016 01:53.
Arduboy.Prototype
2 layer board of 2.13x3.37 inches (54x86mm). $35.80 for three.
This is the prototype, plan released for a contest…there are more upgraded versions with better design and cases coming
Arduboy is a miniature open-source game system that you can program yourself! If you don’t know how to program yet, it’s a great way to learn! If you already are an expert developer, join our community and show off your skills! Arduboy is a game system the size of your imagination!
Recently funded on Kickstarter and on display at Maker Faires around the world, everyone loves Arduboy!
SunnyBuddy-v1.3
by
WarHawk-AVG.
2
layer board of
1.86x1.86
inches
(47.14x47.14
mm).
Shared on
January 9th, 2016 20:43.
SunnyBuddy-v1.3
2 layer board of 1.86x1.86 inches (47x47mm). $17.20 for three.
SparkFun Sunny Buddy - MPPT Solar Charger
Description: This is the Sunny Buddy, a maximum power point tracking (MPPT) solar charger for single-cell LiPo batteries. This MPPT solar charger provide you with the ability to get the most possible power out of your solar panel or other photovoltaic device and into a rechargable LiPo battery. Set-up is easy as well, just plug your solar panel into one side of the Sunny Buddy and your battery into the other and you are good to start charging!
The output of the Sunny Buddy is intended to charge a single polymer lithium ion cell. The load should be connected in parallel with the battery. By default, the Sunny Buddy comes set to a maximum charge current of 450mA with a maximum recommended input of 20V (minimum 6V). It’s recommended that batteries not be charged at greater than their capacity rating; thus, the smallest battery that should be charged with the Sunny Buddy is 450mAh.
Each Sunny Buddy comes equipped with a LT3652 power tracking 2A battery charging circuit and pre-installed barrel jack and 2-pin JST connectors with unpopulated areas to install your own personal 3.5mm screw terminals for added input/output options. This revision also adds a potentiometer to the input to set the holding voltage for MPPT and we’ve also tweeked the feedback resistors on the output to change the float voltage.
Or you can DIY in OSHPark purple ;)
LM2575-XX Buck Regulator
by
WarHawk-AVG.
2
layer board of
0.63x1.32
inches
(16.00x33.50
mm).
Shared on
January 9th, 2016 05:32.
LM2575-XX Buck Regulator
2 layer board of 0.63x1.32 inches (16x34mm). $4.15 for three.
Got the idea from here
More or less a LM7805 dropin replacement (maybe 40% larger) I designed it for maximum copper pour under the IC for heatsinking, got the initial design from here and just tweaked it out…there are commercial products that do the same thing, are smaller and more than likely much cheaper here and here and here My design is more or less for the DIY crowd…
By getting the 3.3v, 5v, or 12v LM2575 you can have different output voltage
LM2575 3.3v IC here , 5v IC here and 12v chips
C1 and C2 are 100 uF 153 CLV 0605 series metal SMD capacitors here
Inductor L1 is 330 uH DR127 here
Diode D1 is SOD123 here
LNA - PSA4-5043+
by
WarHawk-AVG.
2
layer board of
1.30x0.50
inches
(33.02x12.70
mm).
Shared on
December 31st, 2015 23:07.
LNA - PSA4-5043+
Another RTL-SDR low noise amplifier
I did a little tweaking on this for better solder mask and silk screening, but no functionality change whatsoever.
Original design Low noise RF amplifier with Mini-Circuits PSA4-5043 +
This design is more like the LNAforall build but a DIY version, depending if you want to use external power (up to 18 vdc as U1 is a voltage regulator, or it bias voltage from the RF cable depending on the components placed on the board [L1, L2, and C2)