Timothy A. Bartsch

Picture Portfolio


Here is a sample of some of my projects. I have divided them into categories:

  • Designs - Pictures of products or designs that I designed. These products often started with customer requirements or a concept phase and eventually were moved into production or deployed in an end environment such as manufacturing facilities or customer sites.
  • PCBs - Pictures of PCBs that I have designed. I worked with a mechanical designer or customer requirements to resolve the mechanical design or board outline. The electronics design or schematics were provided to me along with other performance and design requirements.



Click on the project names to view additional project pictures.



This ROM Emulator is a software development tool. It will emulate a range from 4-bit to 32-bit. It can emulate, SRAM, SDRAM, and Flash Memory. It has the ability to emulate multiple devices simultaneously. It is build on an open source embedded micro Linux platform which has been ported to the 32-Bit ARM 7 Net-Silicon processor. The processor has a network connection allowing users to update code in their product across the LAN/WAN. Emulation occurs in a Xilinx FPGA.

This hardware solution consists of multiple PCBs ranging from 2 to 10 layers.




This Device was designed to allow "PromICE.net" users to use the memory emulator after their PCB or was already designed or in cases where designers did not have the physical space on their PCB for a connector where the emulation cable mated with their product. This POD allowed for any package of any brand memory chip. The POD plugs into the PromICE.net and into an off the shelf adapter that can be soldered or inserted into a socket in place of a SOIC, TQFP, SOP, TSOP, PLCC, DIP, etc. The PCB inside the POD allows a user to re-route the Emulator Power and Ground traces to anywhere on the target. The data signals are then re-routed to any destination in the emulators FPGA. Each POD has a serial EEPROM that stores a unique ID. These ID's can be verified by the emulator to prevent users from connecting the wrong POD and causing the Target damage.



This Device is designed be a universal adapter for an older generation of memory emulators to a newer generation of ROM devices. It can even be programmed to convert the electrical signals that are intended to go to a FWH ROM (Intel BIOS Firmware Hub) to signals that are standard to SRAM. This allows any memory emulator to Emulate FWH ROMs.

The Algorithms are stored in the CPLD on the PCB. The PCB and CPLD also utilize my method of re-routing Power and Ground from the FWH to any net on the memory emulator.

By eliminating any hardware incompatibilities this universal piece of hardware replaced over 20 different fixed PCB solutions.



Similar to the "Spider Box" project, this device brings additional functionality to traditional ROM emulators.

This product utilizes the same PCB that is used in the Spider box. With a few component differences and a separate set of programming this device is will emulate LPC ROMs (low pin count).

This tool is used during the development of LPC BIOS chips on AMD motherboards.


This device is used to test the programming of TI brand fuel gauges. It supports the bq20z80 and bq20z90 family of devices.

Once connected to the SMBus of the battery pack, a user simply pushes the black button and waits for a PASS/FAIL led indicator inside the box. A serial port on the PIC uC sends messages to a PC for additional monitoring. Data can be recorded or used during troubleshooting phase of new designs.


This simple but handy design is one for those who develop hardware or firmware with Atmel AVR chips on the Atmel STK500 Development board. It allows a user to connect their hardware via loose wires to the development board which only has headers. It can be used on any of the port connectors. It has a power led, ground, and 8 i/o pins.


This PCB is a component for a custom test fixture. All of the red relays are controlled by the Atmel CPLD ATF1504AS.

The PCB has inputs for feedback from the DUT (device under test) which is processed with several analog components before the signals are fed into the CPLD. The CPLD uses this feedback to determine exactly how to sequence the i/o outputs to the relays.


This PCB is a prototype for an automated tester for Li-Ion Safety circuits that co-exist on a PCB in a battery pack along with a TI bq20z80 or bq20z90 Fuel Gage. It is intended for use in the product testing phase during mass-production.

The circuit is controlled by an Atmel CPLD and a Microchip PIC uC. This design supports the ability to upgrade the programming of both control chips externally This allows the tester to evolve along with the release of new products that are tested on it.

It also communicates to a computer over RS-232 to record test results, lot numbers, and serial numbers.


The board was designed to allow a user to configure an automated tester. It connects to another board by the connector on the back.

Designed to work with a 30 channel PLC this control board adds analog control functionality to an elaborate production fixture in a manufacturing environment.

The circuit uses OP-Amps to window compare 30 different DC voltages. The Op-Amps send feedback to a PLC allowing it to perform its tasks. The 8 Op-amps are fed a compare voltage from a POT which is monitored by an Atmel AVR microcontroller. If any of the voltages are outside the allowed range then the uC communicates which one is out of tolerance to the CPLD which displays that particular channel on a 7-seg LED display. The CPLD also works as a watch dog continually watching for data on each of the 8 channels from the uC. When all is well it drives an idle pattern on the display, when there is a problem it cycles thru each channel that is out of tolerance on its display.


This is the smallest PCB that I have ever routed. It measures only 0.3" x 0.78". For its size it has many parts and is densly populated.